package interfaces;

interface Game {
    boolean move();
}

interface GameFactory {
    Game getGame();
}

class Checkers implements Game {
    private int moves = 0;
    private static final int MOVES = 3;

    @Override
    public boolean move() {
        System.out.println("Chess move " + moves);
        return ++moves != MOVES;
    }
}

class CheckersFactory implements GameFactory {
    @Override
    public Game getGame() {
        return new Checkers();
    }
}
class Chess implements Game{
    private int moves=0;
    private static final int MOVES=4;
    public boolean move(){
        System.out.println("Chess move "+moves);
        return ++moves!=MOVES;
    }
}
class ChessFactory implements GameFactory{
    @Override
    public Game getGame() {
        return new Chess();
    }
}
public class Games {
    public static void playGame(GameFactory factory){
        Game s=factory.getGame();
        while(s.move())
            ;
    }
    public static void main(String[] args){
        playGame(new CheckersFactory());
        playGame(new ChessFactory());
    }
}
